A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5935-00-248-3549
NSN 5920-01-599-1559
NSN 6150-01-312-3630
NSN 6145-01-107-7370
NSN 6645-00-983-2046
NSN 5985-01-123-1988
NSN 5935-00-113-4971
NSN 6685-00-012-3734
NSN 5930-01-623-8983
NSN 2925-01-381-5307
NSN 6150-00-536-0274
NSN 5910-00-388-6737